Integers

If a is an integer other than 1 and –1, match the following:
Column I Column II
(a) a ÷ (–1) (i) a
(b) 1 ÷ (a) (ii) 1
(c) (–a) ÷ (–a) (iii) Not an integer
(d) a ÷ (+1) (iv) –a